Click on image to view larger version.

Figure 4 Individual LV Mass Variability in Patients With HCM

Cardiovascular magnetic resonance 4-chamber end-diastolic images from 2 HCM patients with identical maximal LV wall thickness (i.e., 33 mm in the anterior ventricular septum), but markedly different LV mass index values (A = 184 g/m²; B = 92 g/m²). The difference in mass is due to the extensive distribution of increased LV thickness beyond the ventricular septum and into the LV free wall in A, while the patient in B shows hypertrophy confined to the septum. FW = free left ventricular wall; RV = right ventricular cavity; VS = ventricular septum; other abbreviations as in Figure 1.